In Freeplay, players can utilize the "Build" tab to expand their network by adding new tracks and equipment to their railroad.
If two tracks connect, they will form a switch. Switches are intersections where a train can change tracks. There are only so many styles of switches you can build, though, so if you ever see that you can't build track off a certain location, it's probably because you can't build that type of switch if there's not a wall, autoblock, or station preventing you instead.
You can upgrade tracks by using the "Change track speed" tool. If you do, it will charge you money equal to how much it would cost to replace the track normally. If you want to upgrade a piece of track to a speed multiple levels faster than it, just click on the track multiple times. You can right-click to remove speed from the track and to get money back.
Signals can be built on any piece of empty straight track. They cannot be built on switches, curves, or other objects. To reverse a signal, just click on it a second time.
Auto Signals can be built on top of Manual Signals. This will only cost you 8,000 instead of the regular 10,000. Manual signals can do the same, and instead give you 8,000.
Signals placed on the ends of tunnels will not function properly.
Sensors can be built on any empty non-switch piece of track. Unlike Signals, Sensors can be built on curves. If you want to know how to use sensors, check out Automation.
Sensors will not work if built on the ends of tunnels.
- In order for two tunnels to connect, the game must find a path between the two that only uses 45 degree turns
- Tunnels cannot go through walls
- Tunnels cannot go through stations
- Tunnels cannot go through autoblocks
On top of that, you cannot build in tunnels, and anything built on tunnel portals do not function properly.
However, tunnels do not collide with anything else. Two tunnels that go straight through each other will not run the risk a crash.
Tunnel speeds can be changed using the "Change track speed" tool.
Building in the level editor is quite similar to building in freeplay. There are a few notable differences, however:
- Track speeds cannot be changed. Once a scored level is saved, Tunnels will always be 40kmph, regular track 120kmph, and Autoblocks 200kmph.
- Walls, Autoblocks, and stations can be built.
- Tunnels will build the most direct path, even if there are walls or stations in the way.
- Building objects costs no money.
There are some editor-specific tools that help users build more refined levels. You can learn more about those on the level editor guide.